"There was a concern that it may have been subject to Nazi looting," says Special Agent Robert Giczy, a member of the FBI's art crime unit and one of the agents involved in the odalisque investigation. "There was a hole in its history from 1931 to 1959," he said. "The Third Reich was 1933 to 1945. So we had a responsibility to ensure the status of the painting was [kosher]." "It was like trying to find the hole in a donut: something that just wasn't there," Giczy said. With assistance from the Getty Research Institute in California, the Art Loss Register in London, and the International Foundation for Art Research (IFAR) in New York, the FBI determined in April of 2014 that the painting had not been stolen by Nazis but had been privately owned in London and America during that period. "That freed the painting so that it was available for repatriation," Giczy said.